Multiple buffer overflow vulnerabilities exist in the vtysh_ubus binary of Milesight UR32L v32.3.0.5 due to the use of an unsafe sprintf pattern. A specially crafted HTTP request can lead to a buffer overflow. An attacker can send HTTP requests to trigger these vulnerabilities.This buffer overflow occurs in the handle_interface_acl function with the interface variable when in_acl is -1.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-25089
• https://talosintelligence.com/vulnerability_reports/TALOS-2023-1716